Exine layer of pollen grain is made up of : a) sporopollenin b)Pectin c) cellulose d)chitin

Exine layer of pollen grain is made up of :
a) sporopollenin b)Pectin c) cellulose d)chitin
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1 Answer

Answer :

Ans: a)sporopollenin
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Related questions

Which one of the following statements is not true? (a) Pollen grains of many species cause severe allergies. (b) Stored pollen in liquid nitrogen can be used in the crop breeding programmes. (c) Tapetum helps in the dehiscence of anther. (d) Exine of pollen grains is made up of sporopollenin.

Description : Which one of the following statements is not true? (a) Pollen grains of many species cause severe allergies. (b) Stored pollen in liquid nitrogen can be used in the crop breeding programmes. (c) Tapetum helps in the dehiscence of anther. (d) Exine of pollen grains is made up of sporopollenin.

Last Answer : (c) Tapetum helps in the dehiscence of anther.

12. ------------ is the composition of the intine of the pollen grain (a) cellulose and kitin (b) kitin and polysaccharide (c) cellulose and pectin (d) polysaccharide and glycoprotein

Description : 12. ------------ is the composition of the intine of the pollen grain (a) cellulose and kitin (b) kitin and polysaccharide (c) cellulose and pectin (d) polysaccharide and glycoprotein

Last Answer : (c) cellulose and pectin

The po lysacchar ide found in the exoskeleton of invertebrates is (A) Pectin (B) Chitin (C) Cellulose (D) Chondroitin sulphate

Description : The po lysacchar ide found in the exoskeleton of invertebrates is (A) Pectin (B) Chitin (C) Cellulose (D) Chondroitin sulphate

Last Answer : B

______ is a multibranched polysaccharide of glucose that serves as a form of energy storage in animals and fungi. (1) Cellulose (2) Glycogen (3) Pectin (4) Chitin

Description : ______ is a multibranched polysaccharide of glucose that serves as a form of energy storage in animals and fungi. (1) Cellulose (2) Glycogen (3) Pectin (4) Chitin

Last Answer : (2) Glycogen Explanation: Glycogen is a multi branched polysaccharide of glucose that serves as a form of energy storage in humans, animals, and fungi. The polysaccharide structure represents the ... Glycogen is the analogue of starch, a glucose polymer that functions as energy storage in plants.

______ is a multibranched polysaccharide of glucose that serves as a form of energy storage in animals and fungi. (1) Cellulose (2) Glycogen (3) Pectin (4) Chitin

Description : ______ is a multibranched polysaccharide of glucose that serves as a form of energy storage in animals and fungi. (1) Cellulose (2) Glycogen (3) Pectin (4) Chitin

Last Answer : (2) Glycogen Explanation: Glycogen is a multi branched polysaccharide of glucose that serves as a form of emery storage in humans animals, and fungi.

____ is a multibranched polysaccharide of glucose that serves as a form of energy storage in animals and fungi. (1) Cellulose (2) Glycogen (3) Pectin (4) Chitin

Description : ____ is a multibranched polysaccharide of glucose that serves as a form of energy storage in animals and fungi. (1) Cellulose (2) Glycogen (3) Pectin (4) Chitin

Last Answer : Glycogen

Which one of the following statements is wrong? (a) When pollen is shed at two-celled stage, double fertilisation does not take place. (b) Vegetative cell is larger than generative cell. (c) Pollen grains in some plants remain viable for months. (d) Intine is made up of cellulose and pectin.

Description : Which one of the following statements is wrong? (a) When pollen is shed at two-celled stage, double fertilisation does not take place. (b) Vegetative cell is larger than generative cell. (c) Pollen grains in some plants remain viable for months. (d) Intine is made up of cellulose and pectin.

Last Answer : (a) When pollen is shed at two-celled stage, double fertilisation does not take place.

In angiosperm, all the four microspores of tetrad are covered by a layer which is formed by (a) pectocellulose (b) callose (c) cellulose (d) sporopollenin

Description : In angiosperm, all the four microspores of tetrad are covered by a layer which is formed by (a) pectocellulose (b) callose (c) cellulose (d) sporopollenin

Last Answer : (a) pectocellulose

Which one of the following is resistant to enzyme action? (a) Pollen exine (b) Leaf cuticle (c) Cork (d) Wood fibre

Description : Which one of the following is resistant to enzyme action? (a) Pollen exine (b) Leaf cuticle (c) Cork (d) Wood fibre

Last Answer : (a) Pollen exine

An organic substance that can withstand environmental extremes and cannot be degraded by any enzyme is (a) cuticle (b) sporopollenin (c) lignin (d) cellulose.

Description : An organic substance that can withstand environmental extremes and cannot be degraded by any enzyme is (a) cuticle (b) sporopollenin (c) lignin (d) cellulose.

Last Answer : (b) sporopollenin

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Description : 55. An organic substance that can withstand environmental extremes and cannot be degraded by any enzyme is (1) Cellulose (2) Cuticle (3) Sporopollenin (4) Lignin

Last Answer : Lignin

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Description : Which of the following has proved helpful in preserving pollen as fossils? (a) Pollenkitt (b) Cellulosic intine (c) Oil content (d) Sporopollenin

Last Answer : (d) Sporopollenin

Which of the following has proved helpful in preserving pollen as fossils ? (1) Pollenkitt (2) Cellulosic intine (3) Oil content (4) Sporopollenin

Description : Which of the following has proved helpful in preserving pollen as fossils ? (1) Pollenkitt (2) Cellulosic intine (3) Oil content (4) Sporopollenin

Last Answer : (4) Sporopollenin

The outer skin most of the crustaceans are made up of a carbohydrate. This carbohydrate is (1) cellulose (2) galactose (3) chitin (4) starch

Description : The outer skin most of the crustaceans are made up of a carbohydrate. This carbohydrate is (1) cellulose (2) galactose (3) chitin (4) starch

Last Answer : (3) chitin Explanation: All crustaceans have a body covered with a protective shell composed of a horny substance called chiton. The outer skeleton is not continuous but made up of divided sections called somites.

The outer skin most of the crustaceans are made up of a carbohydrate. This carbohydrate is (1) cellulose (2) galactose (3) chitin (4) starch

Description : The outer skin most of the crustaceans are made up of a carbohydrate. This carbohydrate is (1) cellulose (2) galactose (3) chitin (4) starch

Last Answer : chitin

Cell walls in fungi are made of _____. a. Cellulose b. Glycogen c. Silicon d. Chitin

Description : Cell walls in fungi are made of _____. a. Cellulose b. Glycogen c. Silicon d. Chitin

Last Answer : d. Chitin

Which of the following constitutes fibre or roughage in food? (A) Cellulose (B) Pectin (C) Inulin (D) All of these

Description : Which of the following constitutes fibre or roughage in food? (A) Cellulose (B) Pectin (C) Inulin (D) All of these

Last Answer : Answer : D

The most abundant carbohydrate found in nature is (A) Starch (B) Glycogen (C) Cellulose (D) Chitin

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Last Answer : C

Which of the following is known as animal starch? (1) glycogen (2) cellulose (3) glucose (4) chitin

Description : Which of the following is known as animal starch? (1) glycogen (2) cellulose (3) glucose (4) chitin

Last Answer : (1) glycogen Explanation: Glycogen, the principal storage form of glucose in animal cells, sometimes called "animal starch" for its resemblance with starch found in plants. It t is stored in ... be converted to glucose if needed. In the liver this conversion is regulated by the hormone glucagon.

Identify the substances having glycosidic bond and peptide bond, respectively in their structure. (a) Chitin, cholesterol (b) Glycerol, trypsin (c) Cellulose, lecithin (d) Inulin, insulin

Description : Identify the substances having glycosidic bond and peptide bond, respectively in their structure. (a) Chitin, cholesterol (b) Glycerol, trypsin (c) Cellulose, lecithin (d) Inulin, insulin

Last Answer : (d) Inulin, insulin

One of the major components of cell wall of most fungi is (a) cellulose (b) hemicellulose (c) chitin (d) peptidoglycan.

Description : One of the major components of cell wall of most fungi is (a) cellulose (b) hemicellulose (c) chitin (d) peptidoglycan.

Last Answer : (c) chitin

Which one of the following is NOT a polysaccharide? a. Chitin b. Glycogen c. Cellulose d. Lipid

Description : Which one of the following is NOT a polysaccharide? a. Chitin b. Glycogen c. Cellulose d. Lipid

Last Answer : d. Lipid

Which of the following is a nitrogenous polysaccharide : (a) Starch (b) Cellulose (c) Chitin (d) Glycogen

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The complex of sugar polymers and proteins which are patchily distributed on the plasma membranes of animal cells is called a) cellulose b) chitin c) glyocalyx d) cytoskeleton

Description : The complex of sugar polymers and proteins which are patchily distributed on the plasma membranes of animal cells is called a) cellulose b) chitin c) glyocalyx d) cytoskeleton

Last Answer : ANSWER: C -- GLYOCALYX

The most abundant organic molecule on the surface of the Earth is: w) cellulose x) chitin y) DNA z) hemoglobin

Description : The most abundant organic molecule on the surface of the Earth is: w) cellulose x) chitin y) DNA z) hemoglobin  

Last Answer : ANSWER: W -- CELLULOSE

Which of the following is known as animal starch? (1) glycogen (2) cellulose (3) glucose (4) chitin

Description : Which of the following is known as animal starch? (1) glycogen (2) cellulose (3) glucose (4) chitin

Last Answer : glycogen

Which one of the following statements is wrong?a)Pollen grains in some plants remain viable for monthsb)Intine is made up of cellulose and pectinc)When pollen is shed at two-celled state, double fertilization does not take placed)Vegetative cell is larger than generative cell

Description : Which one of the following statements is wrong?a)Pollen grains in some plants remain viable for monthsb)Intine is made up of cellulose and pectinc)When pollen is shed at two-celled state, double fertilization does not take placed)Vegetative cell is larger than generative cell

Last Answer : c)When pollen is shed at two-celled state, double fertilization does not take place

Which of the following statements is correct? (a) Sporopollenin can be degraded by enzymes. (b) Sporopollenin is made up of inorganic materials. (c) Sporopollenin can withstand high temperatures as well as strong acids and alkalis. (d) Sporopollenin can withstand high temperatures but not strong acids.

Description : Which of the following statements is correct? (a) Sporopollenin can be degraded by enzymes. (b) Sporopollenin is made up of inorganic materials. (c) Sporopollenin can withstand high temperatures ... strong acids and alkalis. (d) Sporopollenin can withstand high temperatures but not strong acids.

Last Answer : (c) Sporopollenin can withstand high temperatures as well as strong acids and alkalis

Which of the following makes the skin layer impervious to water? (1) Collagen (2) Melanin (3) Keratin (4) Chitin

Description : Which of the following makes the skin layer impervious to water? (1) Collagen (2) Melanin (3) Keratin (4) Chitin

Last Answer : (3) Keratin Explanation: Keratin is a family of fibrous structural proteins. Keratin is the key structural material making up the outer layer of human skin. It is also the key structural component ... layer of the skin almost waterproof, and along with collagen and elastin, gives skin its strength.

Which of the following makes the skin layer impervious to water ? (1) Collagen (2) Melanin (3) Keratin (4) Chitin

Description : Which of the following makes the skin layer impervious to water ? (1) Collagen (2) Melanin (3) Keratin (4) Chitin 

Last Answer : Keratin

Part of gynoecium that determines the compatible nature of pollen grain. -Biology

Description : Part of gynoecium that determines the compatible nature of pollen grain. -Biology

Last Answer : answer:

why sterile tissues degenerate in anther during the maturation of pollen grain -Biology

Description : why sterile tissues degenerate in anther during the maturation of pollen grain -Biology

Last Answer : answer:

Role of tapetum in the formation pollen-grain wall? -Biology

Description : Role of tapetum in the formation pollen-grain wall? -Biology

Last Answer : answer:

Pollen grain of hibiscus? -Biology

Description : Pollen grain of hibiscus? -Biology

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Explain the structure of pollen grain? -Biology

Description : Explain the structure of pollen grain? -Biology

Last Answer : answer:

Explain the structure of pollen grain? -Biology

Description : Explain the structure of pollen grain? -Biology

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What Differ between cheek cells and pollen grain?

Description : What Differ between cheek cells and pollen grain?

Last Answer : Need answer

Haploid cells belong to: (a) Integument, pollen grain, endosperm (b) Embryo, endosperm and pollen grain (c) Megaspore, pollen grain, antipodal (d) Integument, pollen grain and antipodal

Description : Haploid cells belong to: (a) Integument, pollen grain, endosperm (b) Embryo, endosperm and pollen grain (c) Megaspore, pollen grain, antipodal (d) Integument, pollen grain and antipodal

Last Answer : Ans. ((c))

The study of pollen grain is known as : (a) Palaeobotany (b) Palynology (c) Pomology (d) Phonology

Description : The study of pollen grain is known as : (a) Palaeobotany (b) Palynology (c) Pomology (d) Phonology

Last Answer : Ans:(b)

Male gametophyte of angiosperms is shed at (a) four celled pollen grain (b) three celled pollen grain (c) microspore mother cell (d) anther.

Description : Male gametophyte of angiosperms is shed at (a) four celled pollen grain (b) three celled pollen grain (c) microspore mother cell (d) anther.

Last Answer : b) three celled pollen grain

Point out the odd one. (a) Nucellus (b) Embryo sac (c) Micropyle (d) Pollen grain

Description : Point out the odd one. (a) Nucellus (b) Embryo sac (c) Micropyle (d) Pollen grain

Last Answer : (d) Pollen grain

Which one of the following is surrounded by a callose wall? (a) Male gamete (b) Egg (c) Pollen grain (d) Microspore mother cell

Description : Which one of the following is surrounded by a callose wall? (a) Male gamete (b) Egg (c) Pollen grain (d) Microspore mother cell

Last Answer : (d) Microspore mother cell

The plant parts which consist of two generations- one within the other (1) pollen grains inside the anther (2) germinated pollen grain with two male gametes (3) seed inside the fruit (4) embryo sac inside the ovule (a) (1) only (b) (1), (2), and (3) (c) (3) and (4)

Description : The plant parts which consist of two generations- one within the other (1) pollen grains inside the anther (2) germinated pollen grain with two male gametes (3) seed inside the fruit (4) embryo sac inside the ovule (a) (1) only (b) (1), (2), and (3) (c) (3) and (4)

Last Answer : (d) (1) and (4).

n Pinus/gymnosperms, the haploid structure are (a) megaspore, endosperm and embryo (b) megaspore, pollen grain and endosperm (c) megaspore, integument and root (d) pollen grain, leaf and root.

Description : n Pinus/gymnosperms, the haploid structure are (a) megaspore, endosperm and embryo (b) megaspore, pollen grain and endosperm (c) megaspore, integument and root (d) pollen grain, leaf and root.

Last Answer : (b) megaspore, pollen grain and endosperm

.In Pinus, the pollen grain has 6 chromosomes then in its endosperm will have (a) 12 (b) 18 (c) 6 (d) 24.

Description : .In Pinus, the pollen grain has 6 chromosomes then in its endosperm will have (a) 12 (b) 18 (c) 6 (d) 24.

Last Answer : (c) 6

In gymnosperms, the pollen chamber represents (a) a cavity in the ovule in which pollen grains are stored after pollination (b) an opening in the megagametophyte through which the pollen tube approaches the egg(c) the microsporangium in which pollen grains develop (d) a cell in the pollen grain in which the sperms are formed.

Description : In gymnosperms, the pollen chamber represents (a) a cavity in the ovule in which pollen grains are stored after pollination (b) an opening in the megagametophyte through which the pollen tube approaches the ... pollen grains develop (d) a cell in the pollen grain in which the sperms are formed.

Last Answer : (c) the microsporangium in which pollen grains develop

Name two cells of a mature pollen grain?

Description : Name two cells of a mature pollen grain?

Last Answer : Ans: Vegetative cell and Generative cell

In a cell haploid chromosome number is 15. What number is found in Pollen grain, Zygote, Primary endosperm nucleus and Colchicine treated zygote.

Description : In a cell haploid chromosome number is 15. What number is found in Pollen grain, Zygote, Primary endosperm nucleus and Colchicine treated zygote. 

Last Answer : Ans: 15 in pollen grain, 30 in zygote, 45 in Primary Endosperm nucleus and 60 in colchicine treated zygote.

Study of pollen grain is called- (a) Pomology (b) Palynology (c) Phocology (d) Mycology

Description : Study of pollen grain is called- (a) Pomology (b) Palynology (c) Phocology (d) Mycology

Last Answer : (b) Palynology 

My home-made marmalade won't set. Can I open the jars and add pectin?

Description : My home-made marmalade won't set. Can I open the jars and add pectin?

Last Answer : I have in the past made a jelly that didn't gel. We re-opened the jars and re-boiled, as you describe. Of course, we also re-sterilized the jars and everything, and just started fresh. We didn't add ... could do it that way as well. In short, yes, your idea should work, or at least won't hurt.